Thomas Sinnickson Gayner Net Worth - Insider Trades and Bio as of Apr 29, 2026

Thomas Sinnickson Gayner's Net Worth

$85.5 Million

Estimate Recalculated Nov 11, 2024 07:48AM EST

Who is Thomas Sinnickson Gayner

Thomas Sinnickson Gayner has an estimated net worth of $85.5 Million. This is based on reported shares across multiple companies, which include Colfax CORP, Cable One, Inc., Graham Holdings Co, MARKEL GROUP INC., and COCA COLA CO.

SEC CIK

Thomas Sinnickson Gayner's CIK is 0001159015

Past Insider Trading and Trends

2015 was Thomas Sinnickson Gayner's most active year for acquiring shares with 12 total transactions. Thomas Sinnickson Gayner's most active month to acquire stocks was the month of April. 2016 was Thomas Sinnickson Gayner's most active year for disposing of shares, totalling 4 transactions. Thomas Sinnickson Gayner's most active month to dispose stocks was the month of November. 2019 saw Thomas Sinnickson Gayner paying a total of $1,350,403.36 for 13,779 shares, this is the most they've acquired in one year. In 2016 Thomas Sinnickson Gayner cashed out on 7,283 shares for a total of $5,862,952.07, their largest year based on trade value.

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Colfax CORP

Investor

Updated Jan 04, 2022

View Quote Details


Form 4	0.76%	490.00	—	—	Jan 04, 2022	65.06K	Grant	—	Dec 31
Form 4	0.77%	491.00	—	—	Oct 04, 2021	64.57K	Grant	—	Sep 30
Form 4	0.77%	492.00	—	—	Jul 01, 2021	64.08K	Grant	—	Jun 30
Form 4	5.46%	3.29K	—	—	May 14, 2021	63.59K	Grant	—	May 12
Form 4	0.81%	486.00	—	—	Apr 06, 2021	60.29K	Grant	—	Mar 31
Form 4	0.94%	556.00	—	—	Jan 05, 2021	59.81K	Grant	—	Dec 31
Form 4	1.04%	610.00	—	—	Oct 02, 2020	59.25K	Grant	—	Sep 30
Form 4	1.05%	610.00	—	—	Jul 02, 2020	58.64K	Grant	—	Jun 30
Form 4	15.27%	8.47K	—	—	May 26, 2020	63.93K	Grant	—	May 21
Form 4	1.97%	1.07K	—	—	Apr 02, 2020	55.46K	Grant	—	Mar 31
Form 4	1.09%	585.00	—	—	Jan 03, 2020	54.39K	Grant	—	Dec 31
Form 4	1.38%	732.00	—	—	Oct 02, 2019	53.80K	Grant	—	Sep 30
Form 4	1.41%	738.00	—	—	Jul 02, 2019	53.07K	Grant	—	Jun 28
Form 4	18.26%	9.15K	—	—	May 15, 2019	59.27K	Grant	—	May 13
Form 4	1.36%	674.00	—	—	Apr 02, 2019	50.12K	Grant	—	Mar 29
Form 4	1.97%	957.00	—	—	Jan 03, 2019	49.45K	Grant	—	Dec 31
Form 4/A	1.16%	555.00	—	—	Oct 09, 2018	48.49K	Grant	—	Sep 28
Form 4	1.20%	575.00	—	—	Oct 02, 2018	48.51K	Grant	—	Sep 28
Form 4	1.38%	653.00	—	—	Jul 03, 2018	47.94K	Grant	—	Jun 29
Form 4	16.06%	7.28K	—	—	May 21, 2018	52.58K	Grant	—	May 17
Form 4	1.40%	627.00	—	—	Apr 03, 2018	45.31K	Grant	—	Mar 29
Form 4	1.19%	525.00	—	—	Jan 03, 2018	44.68K	Grant	—	Dec 29
Form 4	1.10%	480.00	—	—	Oct 03, 2017	44.16K	Grant	—	Sep 30
Form 4	1.19%	514.00	—	—	Jul 05, 2017	43.68K	Grant	—	Jun 30
Form 4	13.98%	5.81K	—	—	May 22, 2017	47.40K	Grant	—	May 18
Form 4	0.93%	383.00	—	—	Apr 04, 2017	41.59K	Grant	—	Mar 31
Form 4	1.02%	418.00	—	—	Jan 04, 2017	41.21K	Grant	—	Dec 30
Form 4	1.19%	478.00	—	—	Oct 03, 2016	40.79K	Grant	—	Sep 30
Form 4	1.43%	567.00	—	—	Jul 05, 2016	40.31K	Grant	—	Jun 30
Form 4	17.89%	6.75K	—	—	May 17, 2016	44.49K	Grant	—	May 13
Form 4	1.41%	525.00	—	—	Apr 04, 2016	37.74K	Grant	—	Mar 31
Form 4	1.76%	642.00	—	—	Jan 05, 2016	37.21K	Grant	—	Dec 31
Form 4	1.39%	502.00	—	—	Oct 01, 2015	36.57K	Grant	—	Sep 30
Form 4	0.91%	325.00	—	—	Jul 01, 2015	36.07K	Grant	—	Jun 30
Form 4	11.24%	3.90K	—	—	May 15, 2015	38.63K	Grant	—	May 13
Form 4	0.91%	314.00	—	—	Apr 01, 2015	34.73K	Grant	—	Mar 31
Form 4	1.07%	364.00	—	—	Jan 05, 2015	34.41K	Grant	—	Dec 31
Form 4	0.58%	197.00	—	—	Oct 01, 2014	34.05K	Grant	—	Sep 30
Form 4	0.45%	151.00	—	—	Jul 02, 2014	33.85K	Grant	—	Jun 30
Form 4	7.28%	2.40K	—	—	May 15, 2014	35.42K	Grant	—	May 14
Form 4	0.48%	158.00	—	—	Apr 02, 2014	33.02K	Grant	—	Mar 31
Form 4	0.54%	177.00	—	—	Jan 02, 2014	32.86K	Grant	—	Dec 31
Form 4	0.61%	199.00	—	—	Oct 02, 2013	32.68K	Grant	—	Sep 30
Form 4	0.67%	216.00	—	—	Jul 01, 2013	32.48K	Grant	—	Jun 30
Form 4	9.22%	2.90K	—	—	May 20, 2013	34.34K	Grant	—	May 16
Form 4	0.78%	242.00	—	—	Apr 02, 2013	31.44K	Grant	—	Mar 31
Form 4	0.90%	279.00	—	—	Jan 02, 2013	31.20K	Grant	—	Dec 31
Form 4	1.00%	307.00	—	—	Oct 02, 2012	30.92K	Grant	—	Sep 30
Form 4	1.20%	363.00	—	—	Jul 03, 2012	30.61K	Grant	—	Jun 30
Form 4	16.77%	4.84K	—	—	May 17, 2012	33.70K	Grant	—	May 16
Form 4	0.87%	248.00	—	—	Apr 03, 2012	28.86K	Grant	—	Mar 31
Form 4	1.08%	307.00	—	—	Jan 04, 2012	28.62K	Grant	—	Dec 30
Form 4	1.55%	432.00	—	—	Oct 04, 2011	28.31K	Grant	—	Sep 30
Form 4	1.28%	353.00	—	—	Jul 05, 2011	27.88K	Grant	—	Jun 30
Form 4	11.19%	2.77K	—	—	May 20, 2011	27.52K	Grant	—	May 18
Form 4	1.56%	381.00	—	—	Apr 01, 2011	24.75K	Grant	—	Mar 31
Form 4	1.99%	475.00	—	—	Jan 04, 2011	24.37K	Grant	—	Dec 31
Form 4	2.52%	588.00	—	—	Oct 04, 2010	23.90K	Grant	—	Sep 30
Form 4	3.74%	841.00	—	—	Jul 01, 2010	23.31K	Grant	—	Jun 30
Form 4	27.33%	4.82K	—	—	May 21, 2010	22.47K	Grant	—	May 19
Form 4	4.40%	743.00	—	—	Apr 01, 2010	17.65K	Grant	—	Mar 31
Form 4	4.49%	727.00	—	—	Jan 04, 2010	16.90K	Grant	—	Dec 31
Form 4	5.36%	823.00	—	—	Oct 01, 2009	16.18K	Grant	—	Sep 30
Form 4	7.97%	1.13K	—	—	Jul 02, 2009	15.35K	Grant	—	Jun 30
Form 4	108.18%	7.39K	—	—	May 14, 2009	14.22K	Grant	—	May 12
Form 4	22.93%	1.27K	—	—	Apr 02, 2009	6.83K	Grant	—	Mar 31
Form 4	—	5.56K	—	—	May 14, 2008	5.56K	Grant	—	May 13
Form 3	—	—	—	—	May 07, 2008	—	—	—	—

Showing 68 results

Cable One, Inc.

Investor

Updated Mar 13, 2023

View Quote Details


Form 4	0.04%	1.00	—	—	Mar 13, 2023	31.54K	Grant	—	Mar 10
Form 4	4.31%	100.00	$709.30	$70.93K	Mar 07, 2023	29.12K	Purchase	—	Mar 06
Form 4	0.04%	1.00	—	—	Dec 19, 2022	31.34K	Grant	—	Dec 16
Form 4	23.04%	5.00K	$714.72	$3.57M	Nov 15, 2022	29.02K	Purchase	—	Nov 14
Form 4	85.47%	10.00K	$656.86	$6.57M	Nov 10, 2022	24.02K	Purchase	—	Nov 08 - Nov 09
Form 4	4.46%	500.00	$1,094.74	$547.37K	Sep 13, 2022	14.02K	Purchase	—	Sep 12
Form 4	4.67%	500.00	$1,106.44	$553.22K	Sep 07, 2022	13.52K	Purchase	—	Sep 06
Form 4	4.90%	500.00	$1,177.75	$588.88K	Aug 31, 2022	13.02K	Purchase	—	Aug 29
Form 4	2.20%	50.00	$1,225.00	$61.25K	Aug 25, 2022	12.52K	Purchase	—	Aug 24
Form 4	96.15%	5.00K	$1,291.17	$6.46M	Jun 03, 2022	12.47K	Purchase	—	Jun 01
Form 4	0.67%	50.00	$1,257.97	$62.90K	May 27, 2022	7.47K	Purchase	—	May 25
Form 4	3.20%	230.00	—	—	May 24, 2022	7.42K	Grant	—	May 20
Form 4	1.83%	129.00	—	—	May 25, 2021	7.19K	Grant	—	May 21
Form 4	1.80%	125.00	—	—	May 18, 2020	7.06K	Grant	—	May 15
Form 4	2.98%	201.00	—	—	May 21, 2019	6.94K	Grant	—	May 17
Form 4	—	—	—	—	May 10, 2019	6.73K	Options	—	May 08
Form 4	5.81%	370.00	—	—	May 09, 2018	6.73K	Options	—	May 07 - May 08
Form 4	—	—	—	—	May 04, 2018	6.32K	Options	—	May 02
Form 4	—	49.00	—	—	Jan 04, 2018	6.18K	Grant	—	Jan 03
Form 4	3.00%	184.00	—	—	May 04, 2017	6.32K	Options	—	May 02 - May 03
Form 4	0.28%	1.00	—	—	Jun 07, 2016	6.13K	Grant	—	Jun 03
Form 4	6.18%	357.00	—	—	May 05, 2016	6.13K	Options	—	May 03
Form 4	0.21%	1.00	—	—	Mar 08, 2016	5.77K	Grant	—	Mar 04
Form 4	0.21%	1.00	—	—	Dec 18, 2015	5.77K	Grant	—	Dec 04
Form 4	—	471.00	—	—	Aug 06, 2015	5.77K	Grant	—	Aug 04
Form 4	—	5.30K	—	—	Jul 01, 2015	5.30K	Acq/Dis	—	Jul 01
Form 3	—	—	—	—	Jun 05, 2015	—	—	—	—

Showing 27 results

Graham Holdings Co

Investor

Updated Sep 13, 2024

View Quote Details


Form 4	16.67%	100.00	$743.30	$74.33K	Sep 13, 2024	5.90K	Purchase	—	Sep 12
Form 4	20.00%	100.00	$607.24	$60.72K	Nov 09, 2023	5.80K	Purchase	—	Nov 09
Form 4	25.00%	100.00	$569.83	$56.98K	Sep 12, 2023	5.70K	Purchase	—	Sep 08
Form 4	1.82%	100.00	$581.63	$58.16K	May 09, 2023	5.60K	Purchase	—	May 09
Form 4	1.85%	100.00	$556.15	$55.62K	Sep 16, 2022	5.50K	Purchase	—	Sep 16
Form 4	1.89%	100.00	$595.17	$59.52K	Nov 15, 2021	5.40K	Purchase	—	Nov 11
Form 3	—	—	—	—	Jan 19, 2007	5.30K	—	—	—

Showing 7 results

MARKEL GROUP INC.

Chief Executive Officer

Updated Nov 05, 2024

View Quote Details


Form 4	0.20%	100.00	$1,549.72	$154.97K	Nov 05, 2024	54.13K	Purchase	—	Nov 01
Form 4	2.18%	1.04K	—	—	Feb 27, 2024	54.01K	Grant	—	Feb 20
Form 4	6.02%	2.71K	—	—	Feb 22, 2024	52.97K	Grant	—	Feb 20
Form 4	0.22%	100.00	$1,414.74	$141.47K	Feb 05, 2024	50.26K	Purchase	—	Feb 02
Form 4	-0.10%	-46.00	$1,401.29	-$64.46K	Dec 06, 2023	50.16K	Tax	—	Dec 05
Form 4	0.22%	100.00	$1,311.92	$131.19K	Nov 06, 2023	50.20K	Purchase	—	Nov 03
Form 4	0.22%	100.00	$1,479.47	$147.95K	Aug 07, 2023	50.10K	Purchase	—	Aug 04
Form 4	2.44%	1.07K	—	—	May 18, 2023	50.00K	Grant	—	May 16
Form 4	0.11%	50.00	$1,359.93	$68.00K	May 03, 2023	48.93K	Purchase	—	May 02
Form 4	3.70%	1.56K	—	—	Feb 15, 2023	48.86K	Grant	—	Feb 14
Form 4	0.06%	25.00	$1,317.18	$32.93K	Feb 06, 2023	47.31K	Purchase	—	Feb 03
Form 4	-0.10%	-43.00	$1,315.34	-$56.56K	Dec 07, 2022	47.28K	Tax	—	Dec 06
Form 4	0.12%	50.00	$1,230.60	$61.53K	Nov 09, 2022	47.32K	Purchase	—	Nov 08
Form 4	0.12%	50.00	$1,202.46	$60.12K	Aug 05, 2022	47.27K	Purchase	—	Aug 04
Form 4	0.12%	50.00	$1,306.00	$65.30K	May 09, 2022	47.22K	Purchase	—	May 09
Form 4	4.67%	1.87K	—	—	Feb 17, 2022	47.15K	Grant	—	Feb 15
Form 4	-0.08%	-32.00	$1,249.50	-$39.98K	Dec 09, 2021	45.28K	Tax	—	Dec 07
Form 4	0.06%	25.00	$1,251.30	$31.28K	Nov 23, 2021	45.31K	Purchase	—	Nov 22
Form 4/A	5.09%	1.94K	—	—	Feb 25, 2021	40.11K	Grant	—	Feb 16
Form 4	5.28%	2.02K	—	—	Feb 18, 2021	45.34K	Grant	—	Feb 16
Form 4	-0.12%	-44.00	$1,046.33	-$46.04K	Dec 10, 2020	43.32K	Tax	—	Dec 03 - Dec 08
Form 4	4.91%	1.79K	—	—	Feb 20, 2020	43.34K	Grant	—	Feb 18
Form 4	3.78%	1.33K	$1,016.87	$1.35M	Feb 21, 2019	41.53K	Grant	—	Feb 19
Form 4	-0.16%	-56.00	$1,136.46	-$63.64K	Dec 07, 2018	40.20K	Tax	—	Dec 04
Form 4	3.00%	1.02K	$1,112.73	$1.14M	Feb 23, 2018	40.23K	Grant	—	Feb 21
Form 4	-0.03%	-9.00	$1,130.97	-$10.18K	Jan 18, 2018	39.21K	Tax	—	Jan 16
Form 4	-0.17%	-57.00	$1,110.08	-$63.27K	Dec 07, 2017	39.21K	Tax	—	Dec 05
Form 4	2.32%	775.00	$981.23	$760.45K	Feb 23, 2017	39.24K	Grant	—	Feb 21
Form 4	-5.10%	-1.80K	$958.00	-$1.72M	May 17, 2016	38.46K	Tax	—	May 13
Form 4	0.00%	0.06	$884.98	$54.96	Mar 14, 2016	40.24K	Acquisition	—	Mar 10
Form 4	2.00%	691.00	—	—	Feb 24, 2016	40.24K	Grant	—	Feb 22
Form 4	-12.65%	-5.00K	$826.03	-$4.13M	Feb 18, 2016	39.55K	Sale	—	Feb 16
Form 4	0.00%	0.62	$885.30	$550.04	Jan 15, 2016	44.55K	Grant	—	Dec 24
Form 4	-0.03%	-13.00	$867.39	-$11.28K	Jan 06, 2016	44.54K	Tax	—	Jan 04
Form 4	-0.07%	-26.00	$904.18	-$23.51K	Dec 03, 2015	44.56K	Tax	—	Dec 01
Form 4	-0.04%	-14.00	$810.77	-$11.35K	Jul 06, 2015	44.57K	Tax	—	Jul 01
Form 4/A	3.31%	1.27K	—	—	Apr 13, 2015	39.57K	Grant	—	Feb 23
Form 4	3.31%	1.27K	—	—	Feb 25, 2015	44.56K	Grant	—	Feb 23
Form 4	—	—	—	—	Feb 13, 2015	43.30K	—	—	—
Form 4	4.48%	1.64K	—	—	Feb 21, 2014	43.26K	Grant	—	Feb 19
Form 4	—	—	—	—	Feb 06, 2014	41.61K	—	—	—
Form 4	11.58%	3.81K	—	—	May 15, 2013	41.59K	Grant	—	May 13
Form 4	4.01%	1.27K	—	—	Feb 21, 2013	37.76K	Grant	—	Feb 19
Form 4	0.32%	100.00	$430.34	$43.03K	Jan 03, 2013	36.49K	Purchase	—	Dec 31
Form 4	-0.08%	-24.00	$479.27	-$11.50K	Dec 05, 2012	36.39K	Tax	—	Dec 03
Form 4	-0.07%	-20.98	$397.99	-$8.35K	Dec 05, 2011	36.36K	Tax	—	Dec 02
Form 4	-0.03%	-8.06	$405.85	-$3.27K	May 12, 2011	36.36K	Tax	—	May 10
Form 4	3.51%	1.07K	—	—	Feb 25, 2011	36.34K	Grant	—	Feb 23
Form 4	-0.02%	-7.55	$353.44	-$2.67K	Dec 03, 2010	35.27K	Tax	—	Dec 01
Form 4	10.04%	2.78K	—	—	May 12, 2010	35.24K	Grant	—	May 10
Form 4	-0.06%	-15.76	$339.98	-$5.36K	Dec 11, 2009	32.43K	Tax	—	Dec 09
Form 4	-0.06%	-17.95	$266.19	-$4.78K	Dec 04, 2008	32.37K	Tax	—	Dec 02
Form 4	6.14%	1.60K	—	—	Feb 27, 2008	32.34K	Grant	—	Feb 26
Form 4	—	—	—	—	Jan 03, 2008	30.74K	—	—	—
Form 4	5.86%	1.45K	—	—	Feb 23, 2007	30.69K	Grant	—	Feb 22
Form 4	—	—	—	—	Jan 05, 2007	29.25K	—	—	—
Form 4	2.16%	521.00	—	—	Mar 02, 2006	29.19K	Grant	—	Mar 02
Form 4	—	—	—	—	Jan 05, 2006	28.67K	—	—	—
Form 4	4.71%	1.09K	—	—	Feb 25, 2005	28.61K	Grant	—	Feb 25
Form 4	—	—	—	—	Jan 05, 2005	27.53K	—	—	—
Form 4	5.67%	1.24K	—	—	Feb 26, 2004	27.46K	Grant	—	Feb 26
Form 4	—	—	—	—	Jan 13, 2004	26.22K	—	—	—

Showing 62 results

COCA COLA CO

Investor

Updated Apr 03, 2024

View Quote Details


Form 4	235.65%	4.76K	$60.97	$290.00K	Apr 03, 2024	11.97K	Grant	—	Apr 01
Form 4	—	1.93K	$62.06	$120.00K	Jul 21, 2023	7.13K	Grant	—	Jul 19
Form 3	—	—	—	—	Jul 21, 2023	5.20K	—	—	—

Showing 3 results